Often following the male line is just a way of 'containing' the tree, so it doesnt get out of control. i'm talking the sort of tree that stats at the top with one person and then follows all branches downwards, and when you go back a generation you also find the siblings and again follow all branches downwards. Rather than the sort of tree that starts with one name at the bottom (yours) and goes back to parents, grandparents, grt grandparents etc.
The former style of tree needs to concentrate on one surname, otherwise it would be totally unmanageable, and thus only follows the male line, girls once married are not followed up.
I dont see this as a problem. This is what I have done for many years on my Edmonds's. I recognise the girls are just as important genetically. I recognise that their offspring/ancsetors are just as important and could bring forth all sorts of gems. But following their lines will be a different exercise that I will attempt in the future, and will produce a different tree. Not better, nor inferior, just different.